

Structure and Properties of Peptides - Medical Science
Q1: Hydrogen bonds in a-helices areA more numerous than Vander Waals interactions
B not present at Phe residues
C analogous to the steps in a spiral staircase
D roughly parallel to the helix axis
ANS:D - roughly parallel to the helix axis He secondary structure of DNA is actually very similar to the secondary structure of proteins. The protein single alpha helix structure held together by hydrogen bonds was discovered with the aid of X-ray diffraction studies. The X-ray diffraction patterns for DNA show somewhat similar patterns. |


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